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Sql.py
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Sql.py
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from imports import *
class Entity(QStandardItem): # type: ignore
def __init__(
self,
id,
title=None,
describe=None,
important=-1,
start_time=None,
end_time=None,
create_time=None,
file=None,
):
super().__init__(str(id) + " " + str(title))
assert id != None, "Id was needed!!!"
if create_time == None:
# 获取当前日期和时间
currentDateTime = QDateTime.currentDateTime() # type: ignore
# 将日期和时间格式化为字符串
create_time = currentDateTime.toString("yyyy-MM-dd hh:mm:ss")
self.id = id
self.title = title
self.describe = describe
self.important = important
self.start_time = start_time
self.end_time = end_time
self.create_time = create_time
self.file = file
def __str__(self):
return (
"{"
+ "\n id: "
+ str(self.id)
+ ",\n title: "
+ self.title
+ ",\n describe: "
+ self.describe
+ ",\n important: "
+ str(self.important)
+ ",\n start_time: "
+ self.start_time
+ ",\n end_time: "
+ self.end_time
+ ",\n creat_time: "
+ self.create_time
+ ",\n file: "
+ self.file
+ "\n}"
)
class Database:
def __init__(self) -> None:
# 初始化数据库连接
self.initDatabase()
def initDatabase(self):
# 添加 SQLite 驱动
db = QSqlDatabase.addDatabase("QSQLITE") # type: ignore
db.setDatabaseName("Database.db") # 使用文件路径,也可以是内存中的数据库
if not db.open():
print("无法建立数据库连接!")
return False
# 创建表格
query = QSqlQuery() # type: ignore
query.exec_(
"""
CREATE TABLE IF NOT EXISTS event
(id INTEGER PRIMARY KEY AUTOINCREMENT,
title TEXT,
describe TEXT,
important INTEGER,
start_time TEXT,
end_time TEXT,
create_time TEXT,
file TEXT)
"""
)
"""
# 插入测试数据
self.Insert(
StickyNotesEntity(
1,
"测试",
"用于测试的事件",
1,
"2024-06-25 23:00:32",
"2024-06-25 23:00:32",
None,
"D:\college\Project\新建文件夹\StickyNotes.ui",
)
)
"""
return True
def Select(self, id):
query = QSqlQuery() # type: ignore
query.exec_(
f"""
SELECT *
FROM event
WHERE id={id}
"""
)
if query.next():
return Entity(
query.value(0),
query.value(1),
query.value(2),
query.value(3),
query.value(4),
query.value(5),
query.value(6),
query.value(7),
)
else:
return None
def SelectALL(self):
# 查询数据库中的数据并输出
query = QSqlQuery() # type: ignore
query.exec_("SELECT * FROM event")
stickyNotesEntities = []
while query.next():
stickyNotesEntity = Entity(
query.value(0),
query.value(1),
query.value(2),
query.value(3),
query.value(4),
query.value(5),
query.value(6),
query.value(7),
)
stickyNotesEntities.append(stickyNotesEntity)
return stickyNotesEntities
def Insert(self, stickyNotesEntity):
tmp = f"{stickyNotesEntity.id}"
if stickyNotesEntity.title != "null":
tmp += f", '{stickyNotesEntity.title}'"
else:
tmp += f", {stickyNotesEntity.title}"
if stickyNotesEntity.describe != "null":
tmp += f", '{stickyNotesEntity.describe}'"
else:
tmp += f", {stickyNotesEntity.describe}"
tmp += f", {stickyNotesEntity.important}"
if stickyNotesEntity.start_time != "null":
tmp += f", '{stickyNotesEntity.start_time}'"
else:
tmp += f", {stickyNotesEntity.start_time}"
if stickyNotesEntity.end_time != "null":
tmp += f", '{stickyNotesEntity.end_time}'"
else:
tmp += f", {stickyNotesEntity.end_time}"
tmp += f", '{stickyNotesEntity.create_time}'"
if stickyNotesEntity.file != "null":
tmp += f", '{stickyNotesEntity.file}'"
else:
tmp += f", {stickyNotesEntity.file}"
query = QSqlQuery() # type: ignore
return query.exec_(
f"""
INSERT INTO event (id, title, describe, important, start_time, end_time, create_time, file)
VALUES ({tmp})
"""
)
def Delete(self, id):
query = QSqlQuery() # type: ignore
return query.exec_(
f"""
DELETE
FROM event
WHERE id={id}
"""
)
def Update(self, ID, **kwargs):
tmp = ""
for key, value in kwargs.items():
if key == "id" or key == "important" or value == "null":
tmp += f"{key}={value},"
else:
tmp += f"{key}='{value}',"
query = QSqlQuery() # type: ignore
return query.exec_(
f"""
UPDATE event
SET {tmp[:-1]}
WHERE id={ID}
"""
)
if __name__ == "__main__":
sql = Database()
sql.Select(231)